The original Fallout turns 20 years old tomorrow, as the post-apocalyptic RPG was first released on September 30, 1997. To celebrate, the game is available for free on Steam for a limited time, an offer that apparently does not extend to other digital storefronts. Sadly, no other games in the series have received a discount to honor the game's birthday, and Bethesda has not timed any other new game or content releases to honor the date. You'll have to wait until December 12 for the next big one: Fallout 4 VR, which will launch exclusively for the HTC Vive headset on that date for $59.99. (That price will likely only include that game's core content, as opposed to Fallout 4's "game of the year" edition that includes its extra DLC for free.)